my-app/webpack.config.js

const HtmlWebpackPlugin = require('html-webpack-plugin');
const path = require('path');
module.exports = {
  entry: './src/index.tsx',
  mode: 'development',
  resolve: {
    extensions: ['.ts', '.tsx', '.js', '.json']
  },
  output: {
    path: path.join(__dirname, '/dist'),
    filename: 'bundle.min.js'
  },
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        use: [
          'ts-loader'
        ]
      },
      {
        test: /\.scss?$/,
        use: [
          'style-loader',
          'css-loader',
          'sass-loader',
          {
            loader: 'sass-resources-loader',
            options: { resources: './src/styles/resources.scss' }
          }
        ]
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: "./src/index.html"
    }),
  ]
};